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|
SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
copyrights:
- Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
enabled-by: true
functional-type: action
links:
- role: requirement-refinement
uid: deadlock
post-conditions:
- name: Result
states:
- name: Status
test-code: |
/* Checked by action */
text: |
The return status of the directive call shall be derived from
${../../status/if/deadlock:/name}.
- name: Fatal
test-code: |
/* Checked by action */
text: |
The system shall terminate with the
${/score/interr/if/internal-error-core:/name} fatal source and the
${/score/interr/if/thread-queue-deadlock:/name} fatal code.
test-epilogue: null
test-prologue: null
pre-conditions:
- name: Notification
states:
- name: Status
test-code: |
if ( ctx->tq_ctx->deadlock != TQ_DEADLOCK_STATUS ) {
${.:skip}
}
text: |
Where a detected deadlock results in a return with a status code.
- name: Fatal
test-code: |
if ( ctx->tq_ctx->deadlock != TQ_DEADLOCK_FATAL ) {
${.:skip}
}
text: |
Where a detected deadlock results in a fatal error.
test-epilogue: null
test-prologue: null
- name: Deadlock
states:
- name: One
test-code: |
ctx->more = false;
text: |
While the owner of the thread queue is enqueued on another thread queue
owned by the calling thread.
- name: More
test-code: |
ctx->more = true;
text: |
While the owner of the thread queue is enqueued on another thread queue
owned by a thread other than the calling thread, and so on, while the
owner of the last thread queue of this dependency chain is enqueued on a
thread queue owned by the calling thread.
test-epilogue: null
test-prologue: null
rationale: null
references: []
requirement-type: functional
skip-reasons: {}
test-action: |
Status_Control status;
if ( ctx->tq_ctx->enqueue_variant == TQ_ENQUEUE_STICKY ) {
TQSetScheduler( ctx->tq_ctx, TQ_BLOCKER_A, SCHEDULER_B_ID, PRIO_NORMAL );
} else {
TQSetScheduler(
ctx->tq_ctx,
TQ_BLOCKER_A,
SCHEDULER_A_ID,
PRIO_VERY_HIGH
);
}
TQSetScheduler( ctx->tq_ctx, TQ_BLOCKER_B, SCHEDULER_A_ID, PRIO_HIGH );
TQSetScheduler( ctx->tq_ctx, TQ_BLOCKER_C, SCHEDULER_A_ID, PRIO_HIGH );
TQSortMutexesByID( ctx->tq_ctx );
TQMutexObtain( ctx->tq_ctx, TQ_MUTEX_C );
TQSendAndWaitForExecutionStop( ctx->tq_ctx, TQ_BLOCKER_A, TQ_EVENT_ENQUEUE );
if ( ctx->more ) {
TQSend( ctx->tq_ctx, TQ_BLOCKER_B, TQ_EVENT_MUTEX_A_OBTAIN );
TQSend( ctx->tq_ctx, TQ_BLOCKER_B, TQ_EVENT_MUTEX_C_OBTAIN );
Yield();
TQSend( ctx->tq_ctx, TQ_BLOCKER_C, TQ_EVENT_MUTEX_B_OBTAIN );
Yield();
TQSend( ctx->tq_ctx, TQ_BLOCKER_C, TQ_EVENT_MUTEX_A_OBTAIN );
Yield();
TQSendAndWaitForExecutionStop(
ctx->tq_ctx,
TQ_BLOCKER_A,
TQ_EVENT_MUTEX_B_OBTAIN
);
} else {
TQSendAndWaitForExecutionStop(
ctx->tq_ctx,
TQ_BLOCKER_A,
TQ_EVENT_MUTEX_C_OBTAIN
);
}
if ( ctx->tq_ctx->deadlock == TQ_DEADLOCK_FATAL ) {
status = TQEnqueueFatal( ctx->tq_ctx );
T_eq_int( status, STATUS_DEADLOCK );
} else {
status = TQEnqueue( ctx->tq_ctx, TQ_WAIT_FOREVER );
T_eq_int( status, TQConvertStatus( ctx->tq_ctx, STATUS_DEADLOCK ) );
}
TQMutexRelease( ctx->tq_ctx, TQ_MUTEX_C );
if ( ctx->more ) {
TQSend( ctx->tq_ctx, TQ_BLOCKER_B, TQ_EVENT_MUTEX_C_RELEASE );
TQSend( ctx->tq_ctx, TQ_BLOCKER_B, TQ_EVENT_MUTEX_A_RELEASE );
TQSend( ctx->tq_ctx, TQ_BLOCKER_C, TQ_EVENT_MUTEX_A_RELEASE );
TQSend( ctx->tq_ctx, TQ_BLOCKER_C, TQ_EVENT_MUTEX_B_RELEASE );
TQSend( ctx->tq_ctx, TQ_BLOCKER_A, TQ_EVENT_MUTEX_B_RELEASE );
} else {
TQSend( ctx->tq_ctx, TQ_BLOCKER_A, TQ_EVENT_MUTEX_C_RELEASE );
}
if ( ctx->tq_ctx->enqueue_variant == TQ_ENQUEUE_STICKY ) {
TQSend(
ctx->tq_ctx,
TQ_BLOCKER_A,
TQ_EVENT_SURRENDER | TQ_EVENT_RUNNER_SYNC
);
TQSynchronizeRunner();
TQSetScheduler( ctx->tq_ctx, TQ_BLOCKER_A, SCHEDULER_A_ID, PRIO_HIGH );
} else {
TQSend( ctx->tq_ctx, TQ_BLOCKER_A, TQ_EVENT_SURRENDER );
}
test-brief: null
test-cleanup: null
test-context:
- brief: |
If this member is true, then more than one mutex shall be used for the
deadlock scenario.
description: null
member: |
bool more
test-context-support: null
test-description: null
test-header:
code: null
freestanding: false
includes: []
local-includes:
- tx-thread-queue.h
run-params:
- description: |
is the thread queue context.
dir: inout
name: tq_ctx
specifier: TQContext *${.:name}
target: testsuites/validation/tr-tq-enqueue-deadlock.h
test-includes: []
test-local-includes:
- tr-tq-enqueue-deadlock.h
test-prepare: null
test-setup: null
test-stop: null
test-support: null
test-target: testsuites/validation/tr-tq-enqueue-deadlock.c
test-teardown: null
text: |
When the calling thread attempts to be enqueued on the thread queue.
transition-map:
- enabled-by: true
post-conditions:
Result:
- specified-by: Notification
pre-conditions:
Notification: all
Deadlock: all
type: requirement
|
